Each phone has a unique layout for the DSS/BLF keys.
For the Yealink T43U the layout varies depending on the number of keys that are programmed. If only positions 1 through 8 are programmed, the layout would be:
Position 1 |
The center portion of the display |
Position 5 |
Position 2 |
Position 6 |
|
Position 3 |
Position 7 |
|
Position 4 |
Position 8 |
If more positions were programmed (up to 21 maximum) the layout would make use of the bottom right button as a page button to rotate through 3 pages of 7 keys each:
Position 1/8/15 |
The center portion of the display |
Position 5/12/19 |
Position 2/9/16 |
Position 6/13/20 |
|
Position 3/10/17 |
Position 7/14/21 |
|
Position 4/11/18 |
Page1/2/3 |
Yealink SIP-T43U